The secret to success when using a remote camera is to do plenty of research and know what you want to capture, explains photographer Adam Pretty.

"I set up the camera in the water using scuba diving gear so that I could really take my time and ensure that I would be able to frame the image, making sure it looked perfect through the lens.

"During one of the finals of the swimming I captured the reflection of the competitors and some of the amazing architecture of the venue, known as the ice cube. I just fired the remote when the swimmers hit my mark."

Photo by Adam Pretty / Getty Images / 12 August 2008

Come back each day to read the story behind another spectacular photograph from the Olympics.